Saturn Tables has both built in logic for logging and an accessible logging function for populating the log which can be enabled and viewed on the Settings page. The built in logic works by logging each successive Saturn Tables array entry when possible. You can log both Input Forms and List Tables separately. You can add the log function to your callables when debugging and view the log through the Settings panel. It is probably easiest to view the log in a separate window.

saturn_tables_log($log_area, $message = NULL)

Note specifically that when logging List Tables these 3 log entries are not called during List Table construction but during initialization so the values do not contain inline data that would be inserted into values. If these values are dynamic, you can log the entries through a callable array item, these value will generally log multiple times during a List Table rendering.